4440212321 has 2 divisors, whose sum is σ = 4440212322. Its totient is φ = 4440212320.

The previous prime is 4440212267. The next prime is 4440212351. The reversal of 4440212321 is 1232120444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2274240721 + 2165971600 = 47689^2 + 46540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4440212321 is a prime.

It is not a weakly prime, because it can be changed into another prime (4440212351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220106160 + 2220106161.

It is an arithmetic number, because the mean of its divisors is an integer number (2220106161).

Almost surely, 2^4440212321 is an apocalyptic number.

It is an amenable number.

4440212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440212321 is an equidigital number, since it uses as much as digits as its factorization.

4440212321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4440212321 is about 66634.9181810858. The cubic root of 4440212321 is about 1643.6193514574.

Adding to 4440212321 its reverse (1232120444), we get a palindrome (5672332765).

The spelling of 4440212321 in words is "four billion, four hundred forty million, two hundred twelve thousand, three hundred twenty-one".